(41) باب كَفَّارَةِ النَّذْرِ .
It was narrated from 'Aishah that the Messenger of Allah said:
"There is no vow to commit an act of disobedience, and its expiation is the expiation for an oath."
Reference: Sunan an-Nasa'i 3838
In-book reference: Book 35, Hadith 78
English translation: Vol. 4, Book 35, Hadith 3869